21217576

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1667}}^1$

素因数の和:1753

約数の個数: 32

約数和(自身を含む): 41833440

約数和(自身を除く): 20615864

約数列:

[1, 2, 4, 8, 37, 43, 74, 86, 148, 172, 296, 344, 1591, 1667, 3182, 3334, 6364, 6668, 12728, 13336, 61679, 71681, 123358, 143362, 246716, 286724, 493432, 573448, 2652197, 5304394, 10608788, 21217576]

約数ペア:

[(1, 21217576), (2, 10608788), (4, 5304394), (8, 2652197), (37, 573448), (43, 493432), (74, 286724), (86, 246716), (148, 143362), (172, 123358), (296, 71681), (344, 61679), (1591, 13336), (1667, 12728), (3182, 6668), (3334, 6364)]